
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>Title</title>
</head>
<body>
<% pageContext.setAttribute("key1","page");%>
    ${pageScope.key1}
    ${requestScope.key1}
    ${sessionScope.key1}
    ${applicationScope.key1}
    ${key2}
<br>
    ${key3}
    ${key3.username}
    ${key3.password}
    <br>
    ${key4}
    ${key4[0]}
    ${key4[1]}
    <br>
    ${key5}
    ${key5[0]}
    ${key5[0].username}
    ${key5[0].password}
    <br>
    ${key6}
    ${key6.a1}
    ${key6.a1.username}
    ${key6.a1.password}
    ${key6['a2']}
</body>
</html>
